Product Name:Neutral High Borosilicate Glass Tubing (Clear)
Product Model:173341-130
USP Type I.
Diameter from 10mm to 30mm
Physical Data
 
Coefficient of mean liner thermal
expansion α (20℃;300℃)                         4.87x10-6εK-1
Annealing point                                       562℃
Softening point                                       786℃
Density                                                    2.37g/cm-3
 
Chemical Resistance
 
 
Hydrolytic Class
(DIN ISO 719)                                       HGB 1
to Ph. Eur.                                           Type 1
to USP                                            Type 1
Acid Class(DIN 12 116)                           Class S 1
Alkali Class (DIN ISO 695)                          Class A 2
 
Powdered glass (USP 661)                          0.2ml
Water attack of glass (USP 661)                   <0.1ml
Arsenic                                                <0.1μg/g
 
Chemical Composition
main components in approx weight %
Sio2                                                               75
B2O3                                                                    10.51
Al2O3                                                   5.27
Na2o                                                    4.76
K2O                                                     1.64
BaO                                                     0.55
CaO                                                     1.59
LiO2                                                     0.27
Fe2O2                                                   0.024


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